diff --git a/rtengine/iimage.h b/rtengine/iimage.h
index 65c3a641e..a9415269e 100644
--- a/rtengine/iimage.h
+++ b/rtengine/iimage.h
@@ -1834,7 +1834,6 @@ public:
       * @param pl is the pointer to the class implementing the ProgressListener interface */
     virtual void setSaveProgressListener (ProgressListener* pl) = 0;
     /** @brief Free the image */
-//    virtual void free () = 0;
 };
 
 /** @brief This class represents an image having a float pixel planar representation.